The midfielder returned from injury as a substitute during the recent 1-1 draw at Manchester United, delivering an energetic performance after coming off the bench to help Liverpool secure a point.
Keita was then handed a starting berth in the Champions League tie at Genk and duly produced a fine display to assist the Reds to a comprehensive 4-1 win in Belgium.
Nevertheless, the 24-year-old believes he is capable of delivering even more.